Continuous juice extraction by diffusion.



K. PHILIPP. y CONTINUOUS JUICE EXTRAGTIN BY DIFFUSION.

APPLICATION FILED MAY24,1907,

934,349. l Patented sept;14,19o9.

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KARL PHILIP?, OF MAGDEBURG, GERMANY.

' CONTINUOUS JUICE EXTRACTION BY DIFFUSION.

designed for the treatment of sliced beets,A

but is generally suitable for any lixiviation process.

According to this process the diffusion is accomplished in a high column in which the material under treatment is forced upward at intervals against the liquid, the pressure being greatest at the point where the liquid is most concentrated, that is, charged with the greatest amount' of material extracted from the sliced beets, the pressure gradually decreasing until the top of the column is yso reached. The greater part of the sugar contained in the beets is therefore extracted near the base of the column, where the liquid is most concentrated. At the same time, a part of the concentrated juice is drawn off from the base of the column, heated. and delivered upon a fresh portion of the material under treatment. rPhe material mixed with the juice is then forced upward at intervals into the column, a part of,v the concentrated juice being drawn off and passing to the purifier, but enough liquid being left to enable the mixed mass to be easily moved.

In the accompanying drawing, the ligure represents in side elevation, partly in section, an apparatus for carrying out my process.

A. represents a slicing machine of any `irdinary or approved type, into which thc beets are t'lelivercd. The slices are then delivered into a mashing vessel B, of any approved type, through a chute. ln the mashing vessel l, the beets are mixed with concentrated lliquid which is delivered into the mashing vessel through the pipe .7. From the mashing vessel l the mashed material, mixed with juice, passes downward through a tapering chute into the. casing of a pump I), Within this inclined chute is a. sieve Specification of Letters Patent.

a reciprocating pump,

Patented Sept. 14. 1909.

Application filed May 24, 1907. Serial No. 375,523.

F, through which a ,portion of the juice passes out, and a valved pipe E provided with a suitable valve connected to the space outside of the sieve or screen F and conveys away a portion of. the concentrated juice to the purifier. The pumpv D, which is delivers the mashed with juice by successiveimpulses up through the pipe G into the base of the high column H, a. check valve G being` used to prevent the return of the material on the back stroke of the pump. Tithin the lower tapered end of the column material mixed H, is a screen I, aiulconnected with the l space between'this'screen and the bottom ot' the column H is a pipe J, which deliversv the concentrated juice from the bottom of the column in the mashing vessel B.

K represents a heater of any desired type, interposed' between the parts of the pipe This pipe is provided with a val e. J which is automatically operated b v a lloal in thel Vmasher B.

Connected to the column H is a branched pipe P, the branches of said pipe entering the column at intervals and being provided with valves P1, P2, P3, P4 in the various branches. This for the purpose of admitting liquid at various heights to the. column H, the pipe P being connected to a water reservoir N, which is preferably partly filled with hot, clear water. The height of the liquid in the tank N is regulated by a float valve therein.

L represents chiites arranged at diil'erent.

heights along the column Il and communi eating with the interior thereof, through which the treated material is drawn otl' at dilr'crent heights and passes to the ordinary presses, after which the pressed niaterial is delivered to a suitable. receptacle, and the water is lcd either into a tank or back into the column II. O represents a pipe into which the water from the presses 1s delivered, and this pipe connects with the tank N, and also by means of various branchesvwith the column 'II at. different heightsl thereon, each of said branches being provided with a valve, such as O", OL',

M represents a pump for forcing the water in the pipe either into the tank N or into lso partly into both; and likewise either the slice Wateralone may be fed into the column H, or pure water alone or both.

The operation is as follows: The column H being illed with clear, hot Water to the desired, height, beets are fed into the slicing machine A, and when sliced fall into the mashing vessel B, where they are mixed with water. The mashedA slices mixed water then pass downwardly into the pump D, the valve in the pipe E being closed.l The mashed material is then forced at regular intervals upward through the pipe G into the bottom of the column H, and thereafter the operation is continued, a part of the concentrated juice returning through the pipe J and heater K into the vessel B. After the water in the lower part of the column H has been fully charged with the lixiviated n'iaterial., `a portion is allowed to run out through the pipe E, and one of the valves in the branch pipe l being opened., a fresh supply of water is delivered into the column H as the level in said column falls. Meantime, the water separated from the sliced material by the pressI is also returned, when desired, into the upper part of the column.

The distinctive features of my process are as follows: 1. The introduction otl the material to be lixivialed into the vertical column at ils lowest point in opposition tothe pressure ol the entire liquid column. 2. The arrangement whereby the material inl its freshest state is subjected to the juice of the highest degree of concentration., while the partially treated material is subjected to specifically lighter liquid as the material. is forced upwardly through the column. 3. rlhe movement of the liquid and material under treatment upward in a straight line.' il. The gradual withdrawal et' a part of the with l 'portion of the material most concentrated liquid from the base of the column and the mixing of said concentrated liquid with fresh material to be treated, and the gradual withdrawal of the concentrated juice to the purifier. 5. The heating of the juice in its passa-ge from the base of the high column into the mashing or preparation vessel. 6.1The forcing of the material upward through the column by a single pump, a check valve being provided to prevent the return of the material. j Having thus described my invention, I

claim:

l.A The process of obtaining juices by diffusion, which consists in forcing the material under treatment, mixed with liquid, upward in a vertical column, withdrawing a part of the liquid at the base of the column, mixing the liquid 'withdrawn with a fresh portion of the material and allowing a part of the liquid to How ofi from said substantially as described,

2. `The process of obtaining juices by diffusion, which consists in comminuting the material under treatment, mixing it with hotliquid already charged with juice, allowing a part of the concentrated liquid to flow ofi', continuously pumping the remaining Amixture upward in a vertical column, withdrawing part of the liquid from the base of said column, and heating the liquid withdrawn, said liquid being mixed with a fresh under treatment,

mixture,

substantially as described.

Dated this 13th day of May 1907. In testimony whereof,- 1 aliix my signature, in presence of two witnesses.

' KARL PHILIPP. lVitn esses y HERMANN Foosnnosson, HERMANN HOPPE. 

